These pieces slowly assumed their present positions as the continents. PLATE TECTONIC THEORY Plate tectonics is the theory that the outer rigid layer of the earth (the lithosphere) is divided into a couple of dozen "plates" that move around across the earth’s surface relative to each other‚ like slabs of ice on a lake. There are seven or eight major plates and many minor plates. Where plates meet‚ their relative motion determines the type of boundary: convergent‚ divergent‚ or transform. Earthquakes
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Alfred Wegener(1880-1930) was the first man to propose the theory gplate tectonics.h He had got a Ph.D in astronomy from the University of Berlin‚ but he was also interested in the other science field such as geophysics‚ meteorology‚ and climatology. He also contributed to meteorology by establishing to track air circulation using balloon. In 1911‚ he read a paper that listed identical fossils of plants and animals found on opposite side of the Atlantic‚ and he looked for more of such organisms
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processes were plate tectonics‚ glaciation‚ and weathering & erosion. One example of plate tectonics in CT is the Connecticut River Valley. The Connecticut River Valley was also formed by glaciation but first came the plate tectonics. When the plates divided it created a rift valley‚ (When the land on two sides rises but the middle land lowers or stays the same.) rift valleys can be formed by earthquakes and some other natural forces as well. This is only one example of plate tectonics. Another example
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To answer the following question: Relate the generation of all three rock types (igneous‚ sedimentary‚ and metamorphic) to plate tectonics. I will start first‚ with igneous rocks and how does it relate to plate tectonics. Second‚ with sedimentary rocks and progressively keep on answering how all three types of rocks relate to plate tectonics. Will be giving as much information I learned from class. To assure‚ answer is fully answered. The igneous process begins when magma forms by melting at depth
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Level Material Plate Tectonics Worksheet Answer the lab questions for this week and summarize the lab experience using this form. Carefully read Ch. 8 of Geoscience Laboratory. Complete this week’s lab by filling in your responses to the questions from Geoscience Laboratory. Although you are only required to respond to the questions in this worksheet‚ you are encouraged to answer others from the text on your own. Questions and charts are from Geoscience Laboratory‚ 5th ed. (p. 133-150)‚ by T. Freeman
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The San Andreas Fault and its role in Plate Tectonics and Earthquake Prediction The San Andreas Fault is one of the most widely studied faults in the world. Scientists use an array of methods in collecting data and providing analysis of fault characteristics both past and present. Presently there are many differing hypothesis and models used to describe crustal movements and deformation within the Pacific and North American plate boundary. Historical earthquakes along this fault have proven to be
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The Structure of the Earth and Plate Tectonics Structure of the Earth Mantle • The Earth is made up of 3 main layers: Outer core Inner core – Core – Mantle – Crust Crust The Crust • This is where we live! • The Earth’s crust is made of: Continental Crust Oceanic Crust - thick (10-70km) - buoyant (less dense than oceanic crust) - mostly old - thin (~7 km) - dense (sinks under continental crust) - young How do we know what the Earth is made of? • Geophysical surveys: seismic‚ gravity‚
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The development of the theory of plate tectonics from Continental Drift to the present The theory of continental drift first came to be in 1915 when Alfred Wegener first proposed his belief that 300 billion years ago there was one single supercontinent‚ Pangaea. At the time‚ most did not believe it was true as he had no proof or idea of how the masses of land would move. However‚ new evidence was put forward over time that fit with Wegener’s beliefs. The first key piece of evidence is the shape
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Abstract Energy is an important part of our everyday lives. Energy can come in many different types‚ and forms it can be used for many different purposes. Energy has many different usages and can be converted from one form of usage to another form of usage depending on what the need is. One form of energy conversion is the use of food to supply people’s bodies with energy. Another form of energy is how coal is converted into electricity. Fuel is another form of energy that can be used
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The initial theory of continental drift was put forward by a German meteorologist Alfred Wegener in 1915. This theory did not seem credible until it was connected with the plate tectonic theory in the mid 1960’s. The Tectonic plate theory had an advantage over previous predictions as it could be supported by observed occurrences. One such thing that supports these two theories is that seen from space the continents look as if they might once have been joined together. This possible idea was then
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